If two mitochondrial DNA sequences differ by a single unit, current guidelines require the analyst to report the comparison as inconclusive.

如果两个线粒体dna的序列差异达到一个单位，目前的指导手册要求分析人员把它当作无效的比较。

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Dr Ajmone-Marsan's conclusion was drawn by looking at the mitochondrial DNA of the cows in question.

马森教授的结论是通过对试验牛的生物线粒体DNA的研究得出的。

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Levels of mitochondrial DNA - a female genetic marker only carried down the female line - is similar all along the coast, regardless of language.

不管语言，沿海岸线的线粒体dna的层级——一个女性基因标记只携带了女性线链——是相似的。

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In addition, the finished baby will effectively contain DNA from three people - its mother, father, and a tiny amount of mitochondrial DNA from the donor which is retained.

BBC: Gene technology

Mitochondrial DNA passes unchanged from mother to child, making it useful to trace maternal lineage.

CNN: DNA provides clues to family's African heritage

Mitochondrial DNA is much more prone to oxidative damage (due to its nudity) than genomic DNA (11).

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